Oil burner



April V7, 1925. 1,532,847

' N. E. TYRRELL OIL BURNER Filed April 26, 1923 Patented Apr. 7, 1925.

UNiTED'sTA'TEs NATHAN E. TYRRELL, OF KANSAS CITY, MISSOURI.

OIL BURNER.

appiicatioa aied April as, 192s. vserial No. 634,716.

To all 'whom t may gonrn:

Be it known thatT, NATHAN E. TYRRELL, a citizen of the United States, and resident of Kansas City, county of Jackson, State of Missouri, have invented a certain new and useful Improvement in @il Burners, of which the following is a complete speciiication.

This invention relatesto gravity eil burners and one of the objects is to produce a burner of such type that there will be burner has been installed in position with-- in a furnace.

A still further object is to produce a burner of the character mentioned of strong, durable, eilicient and inexpensive construction; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which Figure 1 is a top plan view of an oil burner embodying the invention;

Figure 2 is a section on the line II-II of Figure 1; and

Figure 3 is a reduced side elevation of the burner.

In the said drawing, where-like reference characters identify corresponding parts in all of the figures, 1 representsv a circular base ring which is adapted .to rest on the grate of a furnace or to be embedded in any suitable insulating material. The base ring 1 is formed with. an external circumferential flange 2 near its upper end, and said flange is provided with suitable threaded openings in which are screwed a plurality of leveling screws 3, which support a dished and anged base plate 4 formed with a series of air conduit openings 5 near its periphery. The base plate is also formed central y with an upwardly projecting discharge nozzle 6 having internal threaded engagement with an oil supply pipe projecting upwardly through the grate of the furnace into the burner, the bore 'of the nozzle above the threaded portion thereof providing a receptacle 6 forming a heating and partial vaporizing chamber.

In order to aid in positioning the base plate 4 on the ring 1, said plate is formed with a series of downwardly extending lugs 8 adapted to be received in notches 9 formed in the circumferential flange 2 of the base ring. "In this connection it will be evident that the leveling screws 3, may be readily utilized to insure the even distribution of the oil, flowing from the nozzle, overthe entire surface of the dished plate, and when the oil is ignited and is burning, as will hereinafter appear, that the base ring 1 and the plate 4 conjointly form a heating chamber 10'for the air entering the burner, the heating of the air aiding materially in the vaporization of the oil.

The mouths of the air conduits 5 are formedwith upwardly projecting shoulders 11 adapted to cooperate with shoulders 12 formed on the ends of tubular air conduits 13, said conduits converging centrally to the vertical axis of the burner to form a central air chamber 141, circumscribed by a downwardly extending flange 15. rIhe nozzle 6 formed on the base plate extends upwardly into the air chamber 14 and is received within an inverted cup 16 removably depending through an opening formed in the upper wall of the air chamber, said cup acting as a deflector for the air currents delivered throu li the conduits '13 and also as a heater of t e partially vaporized oil due to the fact that thecup is directly exposed to the heat in the combustion chamber of the furnace and is also in direct contact with the conduits 13.

The base plate 1 is formed with a suitable overflow opening 1T, to drain off unconsumed oil and prevent the ooding ofthe furnace, and said plate is also formed withr a circular rib 18 around the base of the nozzle to form a retaining and centralizing means for a thin metal ring or cylinder 19 resting on the plate, as clearly shown in the drawing, the top of the ringbeing higher than the outer periphery of the plate and being exposed to the direct action of the lanie to aid in the vaporization of the oil, as said ring will be heated rapidly and uniformly. In order to provide means for commencing the generating action of the burner and also to provide means for burningl gas in com- -introduced into one of the conduits 13 through the grate of the furnace as common in the art.

In normal operation the oil will be vapor* ized by the heat of the cup 16` and the conical nozzle before it attains the base of said conical nozzle, but when the burner is .lirst started, burning on a very small flame, or burning at full capacity, a small quantity of the oil may not be vaporized before it reaches the base of the nozzle, and this oil through contact with the ring 19 will be immediately converted into gas. The flame from the burner will be projected in all directions off the face of the plate 4 and against and between the conduits 13, thus highly heating the air in said conduits and chamber 10, before it mixes with the fuel to form a combustible mixture. :ly conduction the inverted cup 16 becomes highly heated and' applies this heat at the point of overflow and thus materially assists in the gasification of the oil.

It will also be apparent in this connection that the burner may be easily dismantled for cleaning purposes without the use of tools of any character, and that the oil feed pipe 7 if protected from direct contact with the flame and is, therefore, not subjected to becoming internally coated with. carbon, as will be readily understood. It has been found in practice that this burner operates with great efficiency and little noise, and that the combustion is perfect regardless of the amount of fuel supplied, and hence is practicable for satisfactory use in moderate as` Well as severe Weather. It will be noted that the provision of the gas supply pipe enables the burner to be maintained at a vaporizing temperature even though-the supply of oil should be temporarily cut olf.

From the above description it will be apparent that I have produced a gravity oil burner which embodies the features of advantage set forth as desirable in the statement of the objects of the invention, and which is obviously susceptible of modifications in various particulars Without departing from the principle of construction and mode of operation involved.

l. claim:

1. In an oil burner, a base plate, spaced air conduits leading from said base plate and converging toward a point centrally of and above said plate to form an air chamber vdepending through said opening and supported by said conduits, the periphery of said element being spaced slightly from said nozzle.

2. In an oil burner, the combination of a base plate, a nozzle carried by and projecting above said plate, a series of air supply conduits converglng together to forni an air chamber above and surrounding said nozzle, and a vaporizing cylinder encircling the base of said nozzle and detachably carried by said plate and forming a closure adapted to retain oil; the cylinder being exposed to the direct action of the flame.

3. In an oil burner, a vertical oil supply nozzle, an air chamber surrounding said noz zle, and formed in its upper Wall with an opening alined with the axis of saidnozzlc, and an inverted tubular heat conducting element depending through said opening and supported by said upper Wall of the air chamber, the periphery of said element being spaced slightly from the nozzle.

4. In an oil burner, a base plate, a combustion chamber, an oil supply nozzle projecting from said base plate into said co1nvbustion chamber, an upstanding rib formed on said base plate and encircling and spaced from the base of the nozzle and adapted for the retention of oil, a detachable cylinder resting on the base plate Within said rib and being exposed to the lflame and having its lower edge adapted to be immersed in the oil retained by said rib, means for supplying oil to the nozzle, and means for supplying air to the combustion chamber exteriorly of the detachable cylinder.

5. In an oil burner, a combustion chamber, a tubular heat conducting element depending therein, an oil supply nozzle located within the combustion chamber and slightly l spaced from the periphery of the heatconducting element, a detachable cylinder encircling the base of the nozzle and exposed to thedirect action of the flame, andv means for supplying oil and air to the combustion chamber.

In witness whereof I signature.

NATHAN E. TYRRELL.

hereunto a-flix my 

